multifunction-rio-user-manual.pdf - 第20页
Chapter 2 Hardware Overv iew of the NI 78x x Multifunction Reconfigur able I/O User Manual 2-2 ni.com Figure 2-2. NI 7830 Block Diagram RTSI/PXI Triggers PXI Local Bus (NI PXI-7830 only) Connector 0 (MIO) Connector 1 (DI…
© National Instruments Corporation 2-1 Multifunction Reconfigurable I/O User Manual
2
Hardware Overview
of the NI 78xx
This chapter presents an overview of the hardware functions and
I/O connectors on the Reconfigurable I/O (RIO) devices.
Figure 2-1 shows a block diagram for the NI 781x. Figure 2-2 shows a
block diagram for the NI 7830. Figure 2-3 shows a block diagram for the
NI 7831/7833/784x/785x.
Figure 2-1. NI 781x Block Diagram
Configuration
Configuration Control
Connector 0 (DIO)Connector 1 (DIO)Connector 2 (DIO)Connector 3 (DIO)
Digital I/O (40)
User-Configurable
FPGA on
RIO Devices
Digital I/O (40)
Digital I/O (40)
Digital I/O (40)
Data/Address/Control
Bus
Interface
Address/Data
Control
Flash Memory
PCI/PXI/CompactPCI Bus
RTSI/PXI Triggers
PXI Local Bus (NI PXI-781x Only)
RTSI Bus
Chapter 2 Hardware Overview of the NI 78xx
Multifunction Reconfigurable I/O User Manual 2-2 ni.com
Figure 2-2. NI 7830 Block Diagram
RTSI/PXI Triggers
PXI Local Bus (NI PXI-7830 only)
Connector 0 (MIO)
Connector 1 (DIO)
Input Mode Mux
AISENSE
AIGND
Calibration
Mux
Voltage
Reference
Temperature
Sensor
Calibration
DACs
2
x4 Channels
16-Bit
DAC
Digital I/O (16)
User-
Configurable
FPGA on RIO
Devices
Bus
Interface
Data/Address/
Control
Control
Address/Data
Flash
Memory
Configuration
Control
Configuration
PCI/PXI/CompactPCI Bus
16-Bit
ADC
Calibration
DACs
Input Mux
Digital I/O (40)
RTSI Bus
x4 Channels
Instrumentation
Amplifier
AI–
AI+
+
–
Chapter 2 Hardware Overview of the NI 78xx
© National Instruments Corporation 2-3 Multifunction Reconfigurable I/O User Manual
Figure 2-3. NI 7831/7833/784x/785x Block Diagram
NI 7811 Overview
The NI 7811 has 160 bidirectional DIO lines and a Virtex-II XC2V1000
FPGA.
NI 7813 Overview
The NI 7813 has 160 bidirectional DIO lines and a Virtex-II XC2V3000
FPGA.
NI 7830 Overview
The NI 7830 has four independent, 16-bit AI channels; four independent,
16-bit AO channels; 56 bidirectional DIO lines that you can configure
individually for input or output; and a Virtex-II XC2V1000 FPGA.
+
AI+
AI–
PCI/PXI/CompactPCI Bus
Input Mux
Instrumentation
Amplifier
Input Mode Mux
AISENSE
AIGND
16-Bit
DAC
x8 Channels
2
x8 Channels
Configuration
Flash
Memory
User-
Configurable
FPGA on RIO
Devices
Bus
Interface
Connector 1 (DIO)Connector 2 (DIO)
Data/Address/
Control
Digital I/O (16)
Digital I/O (40)
Digital I/O (40)
Calibration
DACs
Configuration
Control
Connector 0 (MIO)
Calibration
DACs
Voltage
Reference
–
16-Bit
ADC
Temperature
Sensor
Calibration
Mux
RTSI/PXI Triggers
RTSI Bus
Address/Data
Control
PXI Local Bus (NI PXI-783x only)